package cn.egeek.babel.dao;

import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import cn.egeek.babel.entity.Topic;

/**
 	* A data access object (DAO) providing persistence and search support for Topic entities.
 			* Transaction control of the save(), update() and delete() operations 
		can directly support Spring container-managed transactions or they can be augmented	to handle user-managed Spring transactions. 
		Each of these methods provides additional information for how to configure it for the desired type of transaction control. 	
	 * @see cn.egeek.babel.entity.Topic
  * @author MyEclipse Persistence Tools 
 */

public class TopicDAO extends HibernateDaoSupport  {
    private static final Log log = LogFactory.getLog(TopicDAO.class);
	//property constants
	public static final String TITLE = "title";
	public static final String CONTENT = "content";
	public static final String EXCERPT = "excerpt";
	public static final String STATUS = "status";
	public static final String COMMENT_COUNT = "commentCount";
	public static final String COMMENT_STATUS = "commentStatus";
	public static final String ALIAS = "alias";
	public static final String CLICK_COUNT = "clickCount";



	protected void initDao() {
		//do nothing
	}
    
    public void save(Topic transientInstance) {
        log.debug("saving Topic instance");
        try {
            getHibernateTemplate().save(transientInstance);
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }
    
	public void delete(Topic persistentInstance) {
        log.debug("deleting Topic instance");
        try {
            getHibernateTemplate().delete(persistentInstance);
            log.debug("delete successful");
        } catch (RuntimeException re) {
            log.error("delete failed", re);
            throw re;
        }
    }
    
    public Topic findById( java.lang.Long id) {
        log.debug("getting Topic instance with id: " + id);
        try {
            Topic instance = (Topic) getHibernateTemplate()
                    .get("cn.egeek.babel.entity.Topic", id);
            return instance;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }
    
    
    public List findByExample(Topic instance) {
        log.debug("finding Topic instance by example");
        try {
            List results = getHibernateTemplate().findByExample(instance);
            log.debug("find by example successful, result size: " + results.size());
            return results;
        } catch (RuntimeException re) {
            log.error("find by example failed", re);
            throw re;
        }
    }    
    
    public List findByProperty(String propertyName, Object value) {
      log.debug("finding Topic instance with property: " + propertyName
            + ", value: " + value);
      try {
         String queryString = "from Topic as model where model." 
         						+ propertyName + "= ?";
		 return getHibernateTemplate().find(queryString, value);
      } catch (RuntimeException re) {
         log.error("find by property name failed", re);
         throw re;
      }
	}

	public List findByTitle(Object title
	) {
		return findByProperty(TITLE, title
		);
	}
	
	public List findByContent(Object content
	) {
		return findByProperty(CONTENT, content
		);
	}
	
	public List findByExcerpt(Object excerpt
	) {
		return findByProperty(EXCERPT, excerpt
		);
	}
	
	public List findByStatus(Object status
	) {
		return findByProperty(STATUS, status
		);
	}
	
	public List findByCommentCount(Object commentCount
	) {
		return findByProperty(COMMENT_COUNT, commentCount
		);
	}
	
	public List findByCommentStatus(Object commentStatus
	) {
		return findByProperty(COMMENT_STATUS, commentStatus
		);
	}
	
	public List findByAlias(Object alias
	) {
		return findByProperty(ALIAS, alias
		);
	}
	
	public List findByClickCount(Object clickCount
	) {
		return findByProperty(CLICK_COUNT, clickCount
		);
	}
	

	public List findAll() {
		log.debug("finding all Topic instances");
		try {
			String queryString = "from Topic";
		 	return getHibernateTemplate().find(queryString);
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}
	
    public Topic merge(Topic detachedInstance) {
        log.debug("merging Topic instance");
        try {
            Topic result = (Topic) getHibernateTemplate()
                    .merge(detachedInstance);
            log.debug("merge successful");
            return result;
        } catch (RuntimeException re) {
            log.error("merge failed", re);
            throw re;
        }
    }

    public void attachDirty(Topic instance) {
        log.debug("attaching dirty Topic instance");
        try {
            getHibernateTemplate().saveOrUpdate(instance);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }
    
    public void attachClean(Topic instance) {
        log.debug("attaching clean Topic instance");
        try {
            getHibernateTemplate().lock(instance, LockMode.NONE);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }

	public static TopicDAO getFromApplicationContext(ApplicationContext ctx) {
    	return (TopicDAO) ctx.getBean("TopicDAO");
	}
}